Hand shaft-planer.



P. WALDNER.

HAND SHAFT PLANER.

APPLICATION FILED APR. 2|. 1911.

Patented Dec. 10, 1918.

PAUL WALDNER, or NEGI-IE, NORTH DAKOTA.

HAND SHAFT-PLANER.

Specification of Letters Patent.

Patented Dec. 10, 1918.

"Application filed April 21, 1917. Serial No. 163,651.

To all whom it may concern Be it known that 1, PAUL WALDNER, a citizen of the United States, and resident of Neche, in the county of Pem-bina and State of North Dakota, have invented new and useful Improvements in Hand Shaft-Planers, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention relates to new and. useful improvements in means for restoring the cylindrical shape of shafts, such as the crank shafts of engines, which have become flattened through continued use.

It is the object of my lnventlon to provide a manually operable device for planing shafts to restore their cylindrical shape, and my invention finds a particularoapplication in rural communities and under other conditions where recourse to a lathe or other turning device cannot readily be had.

A more specific object is to provide a plan- 111g device comprlsmg separable sections,

whereby the device may be readily associated in operative relation to the crank portion of a shaft or to other portions so disposed as not to permit the planing device beingslidable over the end of the shaft.

A further object resides in the provision of a manually operable planing device which is of comparatively simple nature and which is held on the shaft by its disposition thereabout, whereby it may be most readily operated by a simple turning movement.

With the above and other objects in view, the invention resides more particularly in the novel combination, formation and arrangement of parts more fully hereinafter described and particularly pointed out-in the tangular body frame adapted to surround a shaft to be planed, and this frame is formed of U-shaped sections 9 and 10 of metal. The

legs of said U-shaped sections are cut away on opposite sides to form lap joints for the frame sides formed thereby, and the sections aredetachably secured together by bolts 11 passed through openings in the legs of the U-shaped section 9 and threading into the legs of the section 10. A bearing block 12 of general rectangular shape is fitted within the bight portion of the frame section 9, and secured by bolts 13 passed thereinto, and this block is provided with a semi-circular transverse channel 14 forming a half bearing for the shaft to be planed. Slidably mounted in the frame section 10 by reason of the disposition of the legs of said frame sect-ion in recesses 15 of its ends is a cutter block 15, and this cutter block is provided in its inner portlonwith atransverse dovetail groove 16 in whichis fitted an enlarged edge portion ofa beveled cutter blade 17 adapted to en: gage a shaft seated in the bearing channel 13. The plane of the cutting side of the blade paisses through the axisof the bearing channe For holding the cutting block in operative engagement with the shaft, and for feeding the block inwardly as the planing operation proceeds, a pair of feed screws 18 are threaded in the bight portion of the section 10, which forms one end of the frame, and bear against the cutting block. To prevent the access of shavings t0 the bearing channel- 13, which might possibly mar the surface of the shaft, or force the shaft out of its centered position, a pad of felt or other soft packing material 19 is disposed on the inner face of the bearing block 12 at one side thereof and projects inwardly of the channel for yielding engagement with the shaft.

In operating the planer, the frame is disposed in assembledrelation about a fixedly held shaft, the cutting block is then adjusted so as to exert a cutting action on the shaft at its widest portion, and the frame is then rotated, preferably by means of a wrench. As the cutting operation proceeds the block 15 is moved inwardly until a true cylindrical shape has been restored to the shaft, to thus adapt the shaft for efficient continued use without the necessity, such as would be encountered particularly in rural communities, of shipping the shaft to a machine shop to be re-turned.

While I have shown and described a preferred embodiment of my invention, it is obvious thatvarious changes and modifications of structure, to meet differing conditions of use, may be employed without departing in any manner from the spirit of my inventlon, which comprises essentially the provision of a body member carrying a shaft bearing and a cutting member operable by manual rotation of the body member on the shaft.

It is noted that the bearin block 12 may be readily removed by withdrawing the screw bolts 13, and thus a quick adjustment of the device for different sizes of shafts may rovided for by the provision of a plurality of bearing blocks having channels of difierent cross-sectional diameters. Inasmuch as said blocks would fit snugly within the bight of the frame section 9, the securing screws 13 are relieved from lateral strain incidental to operation of the device.

What I claim as new and desire to secure by Letters Patent is: y

l. A shaft planer, comprising a pair of v frame sections with parallel ends, the ends of one frame section being cut away on their inner surfaces and the ends of the other frame section being cut away on their outer surfaces and said cut-away portions fitting together in overlapping relation, bolts passing through said overlapping ends of the frame sections for rigidly securing them together, a bearing member secured in one of the frame sections, a block having guide flanges embracing the edges of the other frame section and slidably mounted therein and guided by the parallel connected ends of the frame sections, a cutter blade carried by the block, and means for sliding the block toward the bearing.

2. A shaft planer, comprisin a pair of frame sections with parallel ends, the ends of one frame section being let into the ends of the other frame section so that the inner faces and side edges of the one frame section are flush with the inner faces and side edges respectively of the other frame section, means for connecting the overlapping ends of the frame sections together, a bearing member in one of the frame sections, a block having guide flanges fitting between the inner faces and embracing the side edges of the framesections, a cutter blade carried by theblock, and means for sliding the block toward the bearing member.

In testimony whereof, I aflix my signature, in presence of two witnesses.

PAUL WALDNER.

Witnesses:

R. S. C. CALDWELL, H. D. CHASE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

